This Tariff Concession Order declares that specific large synchronous AC motors (multiphase, >1,450 kW, >100 A, >3,000 V) are to be treated under Item 50 of Part III of Schedule 4 to the Customs Tariff Act 1995. It takes effect from 28 March 2011 and continues until revoked under sections 269SC or 269SD of the Customs Act 1901. The order matters to importers and suppliers of these high‑power motors because it fixes which tariff schedule item applies and thus determines the tariff outcome for qualifying imports.